Discussion of the hawing voltage phenomenon in inverter 中频变频器呃逆电压现象的探析
With quick increase of the performance of dsp ( digital signal processing ) , digital control are becoming more popular in inverter system 高性能数字信号处理器( dsp )的飞速发展,也使逆变器的数字控制成为今后的发展潮流。
In 2007 , bosch rexroth electric drives and controls ( shenzhen ) co . , ltd is honored of foreign investment top10 brand in inverter industry by china electric tech association 2007年博世力士乐电子传动与控制(深圳)有限公司被中国电工技术学会评为变频器行业"国外十佳品牌" ,其产品共九大系列。
The driving circuit uses exb841 that is very popular to magnify and separate the six spwm signals , and easily to control the switch on or off of six igbts in inverter bridges 驱动电路则是采用了目前较为流行的exb841驱动芯片,对spwm信号放大隔离后,去驱动逆变桥中六支igbt ,使其导通和关断。
According to the requirement of vlsi and the application of ac motor , a motor control ip core is designed with eda and fpga . at the same time , it can be widely used in inverter 论文适应目前大规模集成电路设计要求,结合交流电机方面的应用,利用eda技术和可编程器件fpga ,设计交流电机控制ip软核,并可满足一般变频的要求。
The control situation of inverters is analyzed in this paper . based on the analyzing above , the problem in inverter control is put forward , namely less satisfaction of good static and dynamic response simultaneously 本文在分析了逆变电源控制现状的基础上,提出了逆变电源控制方面存在的问题,即逆变电源输出稳态特性与动态性能的兼顾问题。
The inverter apparatus controlled by pre - set voltage adjustment project has the advantages of low harmonic content , high output frequency precision , simple control circuit . therefore , this kind of project is the hot point in inverter power studying field 用“开关预置式电压调节方案”控制的逆变电源具有输出谐波含量低、输出频率精度高、控制电路简单等优点,是逆变电源研究领域的热点。
Lots of experiments are preformed and some available measures are taken to make the currents balanced . at last , the simulation model of pll is used in inverter circuit , the dynamical performance of the whole system is simulated , and the switching loss is analyzed under different conditions . the method of evaluating the stress ability of power mosfet is given , which is benefit for the system designing 西安理工大学硕上学位论文文章最后将锁相环的仿真模型用于主电路中,模拟出系统工作的整个过程,分析了在不同状态下所对应器件的开关损耗,给出了估算功率mosfet抗瞬变能力的计算方法,从而指导实际_ 1二作,以最短的时间取得最优的系统设计。
Based on the experiences , credible and steady driving circuits for ipm have been designed . the researches on the capabilities of the fault detection and fault signal output and fault signal characteristics help me design the fault - disposing circuit and relevant subroutine . so capabilty of fault - disposing in inverter is enhanced 并且,利用ipm的故障检测与输出功能及故障输出信号的特性,设计了故障处理电路及处理程序,从而增强了变频调速器处理故障的能力,并提高了智能性。
The paper talks the necessary reason of predication and estimation of the power unit , and pays emphasis on the technique of predication and estimation of the dc voltage of the main electrocircuit in inverter and the temperature of the power unit , and then discusses the question from three aspects including constitution of mathematic model , completion of predicative arithmetic and experimentation 本论文首先讨论了对功率器件进行预测与估计的必要性,然后结合科研实际,主要针对半导体功率器件的温度和逆变器主回路的直流电压这两个状态参量的预测与估计问题,从数学模型的建立、状态预测算法的实现及实验与结论三方面进行了仔细的分析和详尽的阐述。